<!DOCTYPE HTML>
<script src="../resources/text-based-repaint.js"></script>
<script>
function highlightRange(id, start, end, active) {
  var range = document.createRange();
  var elem = document.getElementById(id).firstChild;
  range.setStart(elem, start);
  range.setEnd(elem, end);
  internals.addTextMatchMarker(range, active);
}
function repaintTest() {
  highlightRange('1', 0, 6, 'kInactive');
  highlightRange('2', 0, 6, 'kInactive');
  highlightRange('3', 0, 6, 'kInactive');
  highlightRange('4', 0, 6, 'kInactive');
  highlightRange('5', 0, 6, 'kInactive');
  highlightRange('svg1', 8, 14, 'kActive');
  highlightRange('svg2', 0, 6, 'kInactive');
  highlightRange('svg3', 0, 6, 'kInactive');
  highlightRange('svg3', 26, 32, 'kInactive');
  internals.setMarkedTextMatchesAreHighlighted(document, true);
}
if (window.internals)
  onload = runRepaintAndPixelTest;
</script>
<style>
body { margin: 0 }
</style>
Based on svg/custom/text-match-highlight.html. Here run it as a repaint test to check correctness of invalidation.<br>
Automatic test requires run-layout-test. To manually test, open this file in Chrome and find 'findme' in the page.<br>
There should be 9 highlighted instances of "<span id="1">findme</span>". The 6th higlighted instance should be active.<br>
<div style="overflow: scroll; height: 500px">
  Lorum ipsum <span id="2">findme</span> lorum ipsum <span id="3">findme</span><span id="4">findme</span> lorum.<br/>
  longtext<span id="5">findme</span>noyou.<br/>
  <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="450" height="300">
    <defs>
      <path id="textpath"
            d="M 100 200
               C 200 100 300   0 400 100
               C 500 200 600 300 700 200
               C 800 100 900 100 900 100" />
    </defs>
    <text x="10" y="50" id="svg1">Can you findme in this boring text?</text>
    <text x="10" y="100" style="font-size: 10px; font-family: monospace;" id="svg2">Findme in a typewriter!</text>
    <g transform="scale(0.3) translate(0 400)">
      <text font-family="Verdana" font-size="42.5" fill="blue" >
        <textPath xlink:href="#textpath" id="svg3">Findme on a path! Did you findme?</textPath>
      </text>
    </g>
  </svg>
  <div style="height: 1000px"></div>
</div>
